Zoom zoom BoOm x2.

[TurfBurn]

Is that the ring I'm seeing in those pics or is that just the bare metal from the breakoffs?? If it's not the ring then that rules out those as being the cause of the breakage... if it is, it lends credence to it...

 

[ddogg777]

Yes! Back to the tranny, what happened?!

 

[ddogg777]

Is that the ring I'm seeing in those pics or is that just the bare metal from the breakoffs??

Lol, that's what I was wondering (see my post above yours).

 

[ddogg777]

Hey Blkzoom, can you take a closer picture of this that I circled in red(appears to be the ring gap).

 

[BlkZoomZoom]

Thats the ring you see poking through. The tranny, well I don't know yet, haven't taken it out yet. It could possibly be the clutch slipped. First run down the track every week the clutch slips in every gear. After that first run it always holds like a champ. I warmed it up as much as possible when getting on the dyno, I wasn't thinking it would be an issue.

 

[igdrasil]

My only concern at this point as far as those rings is if the ends butted and it jammed.. that piston would slam down on that ring with some considerable force... It looks like you can see the ring in one of those pictures right at the fracture zone.... But otherwise the only potential issue would be severe detonation, but I would think you guys would have heard it... The odd thing is how every single piston cracked on the same spots and tended to pop the right hand relief I believe more than the left...

Is the tranny indeed shot/broken??? or was the noise you thought was that some serious detonation issues.

I have a couple of FSDE pistons melted this way, it will melt in that same place when its too hot.

When piston clearance is too big, it will rattle in the cylinder bore, develop stress cracks and eventually shatters. But you need to pull the piston out and see the sides. If the clearance is too small, you will see a lot of marks on the sides.

Also...if you notice on the rest of the pistons...I think I see a lot of blow-by-gases,that is also food for detonation.

 

[TurfBurn]

I guess maybe the good news is that the revs didn't do it in it now looks like .

EDIT: I'm surprised though that the intake side was where it was apparently hot.... that would have been where I'd expect it to be cooler if anything because of that incoming charge

 

[igdrasil]

I guess maybe the good news is that the revs didn't do it in it now looks like .

EDIT: I'm surprised though that the intake side was where it was apparently hot.... that would have been where I'd expect it to be cooler if anything because of that incoming charge

Yeah, when I saw my friends fried pistons, it melts on the cold side...why! I dont know. But it melted the same way, and it was on nitrous and the other was 15psi of boost.

But I do think that the high revs contributed to the added heat.

 

[ddogg777]

But I do think that the high revs contributed to the added heat.

And the wanting to.....pull apart. Heat+tolerances+velocity (gun)

 

[Spooled]

Yeah, when I saw my friends fried pistons, it melts on the cold side...why! I dont know. But it melted the same way, and it was on nitrous and the other was 15psi of boost.

But I do think that the high revs contributed to the added heat.

It will get hottest where there is the most fuel (energy/heat potential).

 

[BlkZoomZoom]

I have a couple of FSDE pistons melted this way, it will melt in that same place when its too hot.

When piston clearance is too big, it will rattle in the cylinder bore, develop stress cracks and eventually shatters. But you need to pull the piston out and see the sides. If the clearance is too small, you will see a lot of marks on the sides.

Also...if you notice on the rest of the pistons...I think I see a lot of blow-by-gases,that is also food for detonation.

The only piston I see melting on is Number 1. The rest look like breaks.

I don't know how you see blow by gasses. Or even evidence of blow by.

 

[Spooled]

The only piston I see melting on is Number 1. The rest look like breaks.

I don't know how you see blow by gasses. Or even evidence of blow by.

Only way to know is to check the oil.

 

[nvmsp]

final cause of this ?

 

[BlkZoomZoom]

Has not been proven.

 

[BlkZoomZoom]

Only way to know is to check the oil.

There are other ways. I was asking him how he saw them. The car did not have blow by...until.

 

[ddogg777]

final cause of this ?

We have all been throwing out ideas and brainstorming, who knows, we may never know the actual cause unless Blkzoomzoom wants to investigate it further...(alright)

 

[igdrasil]

The only piston I see melting on is Number 1. The rest look like breaks.

I don't know how you see blow by gasses. Or even evidence of blow by.

Pistons with some jelly oily on its crown

 

[ddogg777]

(lol) Jelly Oily!

 

[igdrasil]

(lol) Jelly Oily!

jajajajajjaja pardon my english! (wedge)

 

[TurfBurn]

Yeah, when I saw my friends fried pistons, it melts on the cold side...why! I dont know. But it melted the same way, and it was on nitrous and the other was 15psi of boost.

But I do think that the high revs contributed to the added heat.

Correction.. there isn't any extra heat... just that the rate of heat is greater than the rate of rejection and increases the overall heat that is latent due to the inability for it to be conducted out... takes a greater differential to create enough heat "pressure" to move the heat out of the cylinders... so yes the temps do get hotter, but there isn't MORE heat.